2170800000 has 480 divisors, whose sum is σ = 8195334840. Its totient is φ = 570240000.

The previous prime is 2170799909. The next prime is 2170800013. The reversal of 2170800000 is 80712.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 32399967 + ... + 32400033.

Almost surely, 2^2170800000 is an apocalyptic number.

2170800000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2170800000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4097667420).

2170800000 is an abundant number, since it is smaller than the sum of its proper divisors (6024534840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2170800000 is an frugal number, since it uses more digits than its factorization.

2170800000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 2170800000 is about 46591.8447799612. The cubic root of 2170800000 is about 1294.8116679258.

Adding to 2170800000 its reverse (80712), we get a palindrome (2170880712).

The spelling of 2170800000 in words is "two billion, one hundred seventy million, eight hundred thousand".